Industrial wastewater treatment system and treatment method based on high-salt wastewater

Abstract

The invention discloses an industrial wastewater treatment system and treatment method based on high-salt wastewater, and belongs to the technical field of industrial wastewater treatment. The industrial wastewater treatment system based on high-salt wastewater comprises a circulating resin adsorption unit, a multi-electrode multi-diaphragm electrolysis unit, a reverse osmosis unit, a membrane distillation unit and an evaporation crystallization unit, wherein the circulating resin adsorption unit comprises a plurality of resin adsorption subunits. When multi-electrode multi-diaphragm electrolysis is applied to resin adsorption and reverse osmosis, salt in the high-salt wastewater can be removed more thoroughly. Alkali and acid generated by multi-electrode multi-diaphragm electrolysis can automatically meet alkali and acid requirements of reverse osmosis and membrane distillation. The resin adsorption effect can be optimized through an in-turn adsorption mode of the plurality of resin adsorption subunits. The resin adsorption subunit units are subjected to regeneration treatment by high-temperature steam generated by membrane distillation, so that treatment cost can be greatly saved, and meanwhile, treatment efficiency of high-salt wastewater can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, and more specifically relates to an industrial wastewater treatment system based on high-salt wastewater and a treatment method thereof. Background technique [0002] Facing the increasingly serious pollution of industrial wastewater, improper disposal of industrial waste will produce harmful water after encountering water. In fact, over the past 30 years of reform and opening up, the total amount of industrial production has increased by leaps and bounds. Similarly, the volume of industrial production wastewater will also increase significantly. [0003] High-salt wastewater refers to wastewater with a total salt content of at least 1%. It mainly comes from chemical plants and the collection and processing of oil and natural gas. This wastewater contains a variety of substances (including salt, oil, organic heavy metals and radioactive substances). Salt wastewater is p...

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Problems solved by technology

[0006] The high-salt wastewater in the existing industrial wastewater generally requires additional preparation of acid and lye during treatment. In addition, the adsorption resin used to adsorb organic pollutants needs to be regenerated by using high-temperature steam alone after a period of use. treatment, the above series of operations have virtually increased unnecessary costs, and at the same time reduced the treatment efficiency of high-salt wastewater

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